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rk31xx lvds: add pwr_on and pwr_off function

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This commit is contained in:
zwl
2014-07-28 22:25:17 +08:00
parent d3458c0b8c
commit 97ae98cdc6
2 changed files with 52 additions and 17 deletions
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68
drivers/video/rockchip/transmitter/rk31xx_lvds.c
View File

@@ -76,18 +76,53 @@ static int rk31xx_lvds_clk_disable(struct rk_lvds_device *lvds)
return 0;
}
static int rk31xx_lvds_pwr_on(void)
{
struct rk_lvds_device *lvds = rk31xx_lvds;
if (lvds->screen.type == SCREEN_LVDS) {
/* power up lvds pll and bandgap */
lvds_msk_reg(lvds, MIPIPHY_REGEA,
m_BG_POWER_DOWN | m_PLL_POWER_DOWN,
v_BG_POWER_DOWN(0) | v_PLL_POWER_DOWN(0));
/* enable lvds */
lvds_msk_reg(lvds, MIPIPHY_REGE3,
m_MIPI_EN | m_LVDS_EN | m_TTL_EN,
v_MIPI_EN(0) | v_LVDS_EN(1) | v_TTL_EN(0));
} else {
lvds_msk_reg(lvds, MIPIPHY_REGE3,
m_MIPI_EN | m_LVDS_EN | m_TTL_EN,
v_MIPI_EN(0) | v_LVDS_EN(0) | v_TTL_EN(1));
}
return 0;
}
static int rk31xx_lvds_pwr_off(void)
{
struct rk_lvds_device *lvds = rk31xx_lvds;
/* power down lvds pll and bandgap */
lvds_msk_reg(lvds, MIPIPHY_REGEA, m_BG_POWER_DOWN | m_PLL_POWER_DOWN,
v_BG_POWER_DOWN(1) | v_PLL_POWER_DOWN(1));
/* disable lvds */
lvds_msk_reg(lvds, MIPIPHY_REGE3, m_LVDS_EN | m_TTL_EN,
v_LVDS_EN(0) | v_TTL_EN(0));
return 0;
}
static int rk31xx_lvds_disable(void)
{
struct rk_lvds_device *lvds = rk31xx_lvds;
grf_writel(v_LVDSMODE_EN(0), RK31XX_GRF_LVDS_CON0);
/* power down lvds pll and bandgap */
lvds_msk_reg(lvds, MIPIPHY_REGEA, m_BG_POWER_DOWN | m_PLL_POWER_DOWN,
v_BG_POWER_DOWN(0) | v_PLL_POWER_DOWN(0));
/* disable lvds */
lvds_msk_reg(lvds, MIPIPHY_REGE3, m_LVDS_EN, v_LVDS_EN(0));
if (!lvds->sys_state)
return 0;
grf_writel(v_LVDSMODE_EN(0) | v_MIPIPHY_TTL_EN(0), RK31XX_GRF_LVDS_CON0);
rk31xx_lvds_pwr_off();
rk31xx_lvds_clk_disable(lvds);
lvds->sys_state = false;
return 0;
}
@@ -125,13 +160,7 @@ static void rk31xx_output_lvds(struct rk_lvds_device *lvds,
lvds_writel(lvds, MIPIPHY_REGE2, 0xa0); /* timing */
lvds_writel(lvds, MIPIPHY_REGE7, 0xfc); /* phase */
#endif
/* power up lvds pll and bandgap */
lvds_msk_reg(lvds, MIPIPHY_REGEA, m_BG_POWER_DOWN | m_PLL_POWER_DOWN,
v_BG_POWER_DOWN(0) | v_PLL_POWER_DOWN(0)); /* 0xf8 */
/* enable lvds */
lvds_msk_reg(lvds, MIPIPHY_REGE3, m_MIPI_EN | m_LVDS_EN | m_TTL_EN,
v_MIPI_EN(0) | v_LVDS_EN(1) | v_TTL_EN(0));
rk31xx_lvds_pwr_on();
}
@@ -148,7 +177,7 @@ static void rk31xx_output_lvttl(struct rk_lvds_device *lvds,
lvds_writel(lvds, MIPIPHY_REG3, v_PREDIV(1) | v_FBDIV_MSB(0));
lvds_writel(lvds, MIPIPHY_REG4, v_FBDIV_LSB(7));
/* set lvds mode and reset phy config */
/* set ttl mode and reset phy config */
val = v_LVDS_MODE_EN(0) | v_TTL_MODE_EN(1) | v_MIPI_MODE_EN(0) |
v_MSB_SEL(1) | v_DIG_INTER_RST(1);
lvds_writel(lvds, MIPIPHY_REGE0, val);
@@ -156,8 +185,7 @@ static void rk31xx_output_lvttl(struct rk_lvds_device *lvds,
lvds_writel(lvds, MIPIPHY_REGE1, 0x92);
/* enable ttl */
lvds_msk_reg(lvds, MIPIPHY_REGE3, m_MIPI_EN | m_LVDS_EN | m_TTL_EN,
v_MIPI_EN(0) | v_LVDS_EN(0) | v_TTL_EN(1));
rk31xx_lvds_pwr_on();
}
@@ -166,6 +194,9 @@ static int rk31xx_lvds_en(void)
struct rk_lvds_device *lvds = rk31xx_lvds;
struct rk_screen *screen = &lvds->screen;
if (lvds->sys_state)
return 0;
rk_fb_get_prmry_screen(screen);
/* enable clk */
@@ -183,12 +214,15 @@ static int rk31xx_lvds_en(void)
break;
}
lvds->sys_state = true;
return 0;
}
static struct rk_fb_trsm_ops trsm_lvds_ops = {
.enable = rk31xx_lvds_en,
.disable = rk31xx_lvds_disable,
.dsp_pwr_on = rk31xx_lvds_pwr_on,
.dsp_pwr_off = rk31xx_lvds_pwr_off,
};
static int rk31xx_lvds_probe(struct platform_device *pdev)

1
drivers/video/rockchip/transmitter/rk31xx_lvds.h
View File

@@ -88,6 +88,7 @@ struct rk_lvds_device {
struct clk *pd;
struct rk_screen screen;
bool clk_on;
bool sys_state;
};
static int inline lvds_writel(struct rk_lvds_device *lvds, u32 offset, u32 val)